* {
  margin: 0;
  padding: 0;
  text-decoration: none;
  list-style: none;
}
a,
p {
  color: #fff;
}
a {
  cursor: pointer;
}
/* 开场动画 */
.opening-animation {
  position: absolute;
  width: 100%;
  height: 100%;
  background-color: #fff;
  z-index: 998;
  animation: hiddenOn 2s forwards;
}
.rhombus-img {
  position: fixed;
  width: 100%;
  height: 100%;
  opacity: 0;
  background: url(../img/under_bg.jpg);
  animation: opacity 2s forwards;
  animation-delay: 2s;
}
/* 头部导航 */
.header {
  position: fixed;
  display: flex;
  align-items: center;
  width: 100%;
  height: 80px;
  background-color: black;
  padding: 0 20px;
  box-sizing: border-box;
  z-index: 100;
}
.header .header-nav-right {
  position: absolute;
  display: flex;
  width: 820px;
  height: 40px;
  right: 20px;
  justify-content: space-around;
  align-items: center;
}
.header .header-nav-right > a {
  position: relative;
  font-size: 100%;
  color: #FEFEFE;
  font-weight: lighter;
  font-family: 'Abel';
}
.header .header-nav-right > a::after {
  position: absolute;
  display: block;
  content: '';
  width: 100%;
  height: 1px;
  background-color: #fff;
  bottom: -7px;
  transform: scale(0);
  transition: 0.3s;
}
.header .header-nav-right > a:hover::after {
  transform: scale(1);
}
.header .header-nav-right > a:nth-of-type(1) {
  animation: topmove 1s backwards;
  animation-delay: 0.4s;
}
.header .header-nav-right > a:nth-of-type(2) {
  animation: topmove 1s backwards;
  animation-delay: 0.6s;
}
.header .header-nav-right > a:nth-of-type(3) {
  animation: topmove 1s backwards;
  animation-delay: 0.8s;
}
.header .header-nav-right > a:nth-of-type(4) {
  animation: topmove 1s backwards;
  animation-delay: 1s;
}
.header .header-nav-right > a:nth-of-type(5) {
  animation: topmove 1s backwards;
  animation-delay: 1.2s;
}
.header .header-nav-right > a:nth-of-type(6) {
  animation: topmove 1s backwards;
  animation-delay: 1.4s;
}
.header .header-nav-right > a:nth-of-type(7) {
  animation: topmove 1s backwards;
  animation-delay: 1.6s;
}
.header .header-nav-right > a:nth-of-type(8) {
  animation: topmove 1s backwards;
  animation-delay: 1.8s;
}
.header .header-nav-right > a:nth-of-type(9) {
  animation: topmove 1s backwards;
  animation-delay: 2s;
}
.header .header-nav-right > a:nth-of-type(10) {
  animation: topmove 1s backwards;
  animation-delay: 2.2s;
}
.header .header-nav-right > a:nth-of-type(11) {
  animation: topmove 1s backwards;
  animation-delay: 2.4s;
}
.header .header-nav-right > a:nth-of-type(12) {
  animation: topmove 1s backwards;
  animation-delay: 2.6s;
}
/* 主体 */
.main {
  position: relative;
  opacity: 0;
  animation: opacity 3s forwards;
  /* 尾部 */
}
.main .bg-img {
  position: relative;
  width: 100%;
  height: 480px;
  background: url(../img/int_bg.jpg);
  background-position: 0 -10px;
}
.main .bg-img .bg-bias {
  width: 100%;
  height: 100%;
  background: url(../img/dot.png);
}
.main .bg-img .bg-bias .new {
  position: absolute;
  width: 680px;
  height: 136px;
  background-color: black;
  clip-path: polygon(0 0, 100% 0, 85% 100%, 0 100%);
  bottom: -68px;
  color: white;
  line-height: 136px;
}
.main .bg-img .bg-bias .new span {
  padding-left: 350px;
  font-size: 80px;
  font-family: 'abel';
}
.main .center-nav {
  padding: 150px 0;
}
.main .center-nav h2 {
  font-family: 'Abel', sans-serif;
  text-shadow: 0 0 1px black;
  text-align: center;
  font-size: 2.5rem;
  font-weight: lighter;
  padding-bottom: 48px;
}
.main .center-nav .nav {
  display: flex;
  height: 1200px;
  flex-direction: column;
  align-items: center;
  justify-content: space-around;
}
.main .center-nav .nav a {
  position: relative;
  width: 1200px;
  height: 95px;
  background-color: black;
  padding: 20px 50px;
  box-sizing: border-box;
  opacity: 0;
  animation: topmove 0.8s forwards;
}
.main .center-nav .nav a dl {
  position: absolute;
  width: 91%;
  height: 55px;
  top: 50%;
  margin-top: -22.5px;
}
.main .center-nav .nav a dl dt {
  margin-bottom: 10px;
  font-size: 12px;
}
.main .center-nav .nav a ::after {
  width: 20px;
  height: 20px;
  content: "";
  position: absolute;
  top: 25%;
  right: 0px;
  border-top: 1px solid #E0E0E0;
  border-right: 1px solid #E0E0E0;
  transform: rotate(45deg);
  z-index: 3;
}
.main .footer {
  position: relative;
  width: 100%;
  height: 370px;
  background-color: black;
  overflow: hidden;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
}
.main .footer .top {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-around;
  height: 132px;
  margin-top: 50px;
  padding: 0 10%;
  box-sizing: border-box;
}
.main .footer .center {
  width: 100%;
  height: 72px;
  padding: 0 40%;
  display: flex;
  align-items: center;
  justify-content: space-around;
  margin-top: -20px;
}
@keyframes topmove {
  0% {
    transform: translateY(35px);
    opacity: 0;
  }
  100% {
    transform: translateY(0px);
    opacity: 1;
  }
}
@keyframes opacity {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}
